GRAND RAPIDS – The Grand Rapids Griffins signed defenseman Johann Kroll to a professional tryout and released left wing Mike Walsh on Tuesday morning.

Kroll, 25, has one goal, six assists and 14 penalty minutes in 24 games this season with the South Carolina Stingrays of the ECHL.

In his rookie season last year, the former Ohio State standout had two assists in 26 games with the Syracuse Crunch and went scoreless in two games with the Hershey Bears. He also had one goal and 21 assists in 40 games for South Carolina.

Kroll practiced with the Griffins on Tuesday and will be available for their game against the San Antonio Rampage on Wednesday night at Van Andel Arena.

Walsh has spent parts of the past four seasons with the Griffins following his career at Notre Dame. He appeared in 18 games this season, and had two goals and five penalty minutes. He likely will join an ECHL team Wednesday.